Photographic-film spool.



No. 7l|,6l7 Patenied Oct. 2|, I902.

J. T. CLARKE.

PH'OTOGBAPHIC FILM SPOOL.

(Appliatinn filed Aug. 23, 1902.)

(No Model.)

- I inverxtor.

UNITED STATES PATENT ()FFICE.

JosEPH THACHER oLARKE, OF HARROW, ENGLAND, ASSIGNOR TO EAST- MAN KODAKOOMPANY'OF NEW JERSEY, A CORPORATION on NEW JERSEY.

PHOTOG'RAPHIC-FILM SPOOL.

SPECIFICATION forming part of Letters Patent No. 711,617, dated'October21, 1902.

Application filed August 23; 1902. Serial No. 120,809. (No model.)

To (ZZZ whom it may concern." Y

Be it known that I, JosEPH TEACHER CLARKE, a citizen of the UnitedStates, residing at Harrow, Middlesex county, England, have inventedcertain new and useful Improvements in Photographic-Film Spools,

and I do hereby declare the following to be'a full, clear, and exactdescription of the same, reference being. had to the accompanyingdrawings, forming a part of this specification, and to the referencenumerals marked thereon.

' My present invention relates to spools particularly adapted forcontaining photographic film and to be used in roll-holders or camerasand also to' keys or operating devices for rotating said spool, and hasfor its object to improve their construction and operation whereby notonly may the spools be accurately formed to fit the camera orroll-holder for which they are designed, but the proper operation of thespool is insured by the engagement with the proper key or operatingdevice,

all as will be hereinafter described and the novel features pointed outparticularly in the claims.

In the accompanying drawings, Figure 1 is a perspective view, partly insection, of a film-spool provided with my improvements. Fig. 2 is aperspective view of a winding-key adapted for application to the spoolshown in Fig. 1. Fig. 3 is a vertical sectional view through a portionof a photographic camera or roll-holder, showing a winding spool or rollengaged by awinding-key and a supply-spool supported on centeringdevices. Fig. 4 is a sectional view showing the manner of centering theend of the spool when used as a sup ply-spool. Figs. 5 and 6 areperspective views,

partly in section, showing modifications of my invention.

Similar reference-numerals in the several figures indicate similarparts.

Heretofore the spools or reels employed for.

were provided metal cylindrical collars forced on the end of the spindleand secured by fric tion, by indentations, or 'otherwise,the outer edgeof the collars being provided with lightexcluding flanges of sufficientwidth to prevent access'of light to the edges of the film ,the body ofthe cylinder, extendinginwardly in the body'of the latter and preferablyradially of the center, as shown in Figs. 1 and 5. In the'presentinstance I have shown three such lugs or projections 4 of suchdimensions as to insure firm engagement with corresponding recesses 6,formed'in the ends of the operating-key 7,so as to enable the lattertopositively turn the spool to wind the film. A space is preferably leftbetween the inner proximate ends of the lugs or projections, so thattheymay serve as a means for centering the'spool at one end, if desired,upon the pin or projection 8,'arranged in the supply-chamber of thecamera or roll-holder, as shown particularly in Fig. 3. The collars orcylinders may be secured to the ends of the spindles inany convenientmanner,as by forcing them on, and preferably the length of the spindleis less than the total length ofv the spool by an amount equal to thedistance from the inner ends of the lugs to the outside surface ofthe'light-protecting flange, so that when the metalportion is forcedonto the wooden spindle the end of the latter abuts. against theinternal projections or lugs of the cylinder, which latter serve as aconvenient gage for insuring that all spools of the same kind shall beof exactly the same length. If desired, however,

any suitable construction and mounted rotatably upon a.spring-supporting arm 9 to enable the key to be moved longitudinallyinto and out of engagement with the spool, or it may be arranged toslide longitudinally in a wheel 14, mounted in a plate 20 on astationary part of the camera, being forced inwardly by a spring 10, asshown in Fig. 3. The end of the spool opposite the key may, if desired,be provided with the usual flanged cylinder, the end of the spindlehaving an axial boring in the end adapted to receive a centering-pin ineither the supply or the receiving chamber of the camera, or thecylinder with the lugs may be applied to both ends.

In some instances instead of having the ends of the lugs on the cylinderextend into engagement with the centering projection in thesupply-chamber and in order to insure the proper arrangement of thefilmI provide a separate bearing-block consisting of a disk or collar12, having radial slots therein similar to those in the key for theaccommodation of said lugs and journaled loosely on the headed-pin 13,secured to the camera or holder, as shown in Fig. 4..

While I prefer that thelugs in the cylinder should have their edgesextending parallel with the axis of the spindle, it will be understoodthat they could be punched and arranged, as shown in Fig. 5, at rightangles to said axis.

As one of the objects of my invention is to form the cooperatingsurfaces between the key and spool of metal in order that the parts beaccurately fitted and not liable to get out of adjustment, this could beaccomplished in the manner shown in Fig. 6 by securing upon the end ofthe wooden spindle a cap or thirnble 15, having at its outer endinwardlyturned lugs or projections 16, formed by punching out the endinto the form of theletter K, for instance, the outer flange 17 and itscylinder 18 being forced upon or secured to this cap-piece in anysuitable manner. The winding-key for cooperating with the slots orprojections in this cap would of course be provided with correspondingprojections or slots; butin each instance the ends of the projectionswould constitute bearing-surfaces to engage the centering projection inthe filmsupply chamber such as are now in use, if desired.

I claim as my invention 1. Aspool for photographic film embodying aspindle and having at one end a metal cylinder provided with a pluralityof integral inwardly-extending lugs near the outer end.

2. A spool for photographic film embodying a spindle having at one end ametal cylinder provided with a plurality of integral inwardlyextendinglugs separated at their proximate ends to forma central bearing.

3. A spool for photographic film embodying a spindle having at one end ametal cylinder provided with a radially-extending flange at the outerend and the integral inwardly-extending lugs.

4. A spool for photographic film embodying a spindle having at one end ametal cylinder provided with a radially-extending flange at the outerend and inwardly-extending lugs separated at their inner proximate endsfor the application of a centering-pin.

5. A spool for photographic film embodying a spindle having at one end ametal cylinder provided at the outer end with a radially-extendinglight-excluding flange and the inwardly-extending lugs, said lugs beingarranged between the flange and the end of the spindle.

6. A spool for photographic film embodying a spindle havinglight-excluding flanges at the ends and metal lugs arranged at one end,within the flange, and adapted for engagement with the wards of aWinding-key.

7. Aspool for photographic film,embodying a spindle having at one end ametal cylinder provided with an outwardly-extending flange and lugs cutfrom the material of the cylinder and turned inwardly with the edgessubstantially parallel with the axis of the spindle, said lugs extendingbetween the end of the spindle and the flange and adapted forcooperation with the wards of a Winding-key.

JOSEPH TI-IACI-IER CLARKE.

WVitnesses:

A. NUTTING, H. D. J AMESON.

